B-folw is a new digital imaging technique that provides visulization of blood hemodynamics in a grayscale display.Clinical application has displayed its outstanding advantages.

• 二维灰阶血流成技像技术是在其基础上发展起来的一项新的数字成像技术,以灰阶方式直接显示血流动力学变化,临床应用表明该技术具有突出的优越性。